There is not much a list owner can do about it.  But there is something
the subscriber can do about it.  The user here was using PMail (Pegasus)
one of a number of mail packages that seem to automatically include
the headers if you ask it to include the text in a reply.  There are
many who insist is SHOULD be that way.  We LISTSERV lovers differ.
The following appeared on the PMAIL list about a year ago.  It is
probably time to spread the word again.  But I sit here scratching
my head again as to why the original message about this to this
list did not bounce.  It had headers in the body of the mail--part
of the included bounce.  Oh well.  Here it is.  This seems to work.
Tell your Pegasus users about it.
 
----------------------
When replying back to some mail (and including all text, headers and all),
*please* make sure you do not include a space between your deliminator and
the header information.  Better yet, don't include the headers (CNTL-Y if
using Pmail).  For example:
 
>From: userid
>To:   pmail@ua1vm
>Sub:  subject
>-----------------
>
>Bill Gates eats prunes.
>
 
The above message should get sent correctly to the list and re-distributed.
However.....
 
> From: userid
> To:   pmail@ua1vm
> Sub:  Subject
> -------------
>
> Bill Gates eats prunes.
 
...this one will *not* get sent.  LISTSERV will examine the body and reject
the post due to "...possible mail loop.  From: To: and Sub: appear in the
body of the text."
 
Please either try to (1) exclude the headers or (2) do not put a space between
your deliminator (">" in this case) and the header information (which is
usually not needed anyway).
--------------------
On Thu, 14 Apr 1994 22:22:56 +0200 Eric Thomas said:
>It is  true, and unfortunately  you can't do  anything about it.  You can
>tell LISTSERV to let such postings through, but then you will loop have a
>mailing loop. There are so many non-compliant mailers out there that this
>protection just can't be removed.
>
>  Eric